Originally posted by DeepThoughtI am not so sure it is mentioned by Pliny. The given reference says 'salute' without saying whether actual words are used.
No, according to twhitehead's reference above the expression is mentioned by Pliny and goes back to at least 77 AD, it is not connected with bubonic plague.
-Removed-I generally don't swear, but if I did, I would not mean it rationally, nor would I expect anyone to assume that I did. I am fairly sure that you wouldn't either when you said 'God damn it'. Seriously, do you really think God would send a nail to hell just because you missed it with a hammer?